Kitchen Table Math - Catherine Johnson
A collaborative weblog that began when Johnson's son "... finished out the school year with a 39 on his Unit 6 test, Fractions and Decimals.... Later on I discovered that fractions are the 'bottleneck' in elementary mathematics; lives are lost in the
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The Knight's Tour - Dan Thomasson
The Knight's Tour web site shows various ways to solve open and closed knight tours. The site also offers several animated tours, artwork, and new concepts (magic squares, tessellations, and conjectures about prime numbers) derived from knight moves on
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Knots on the Web - Peter Suber, Earlham College
A comprehensive list of knot resources on the Web c2004, annotated and organized into three categories: knot tying, knot theory, and knot art. Also Knot books and a Knots Gallery displaying images from the newsgroup rec.crafts.knots.
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Knotted Walks - Ivars Peterson (MathTrek)
Given that it normally takes some effort to create a knot, the spontaneous formation of knots in ropes and strings can appear rather puzzling. Having no obvious explanation of the effect, frustrated users can't help but acknowledge this knotting phenomenon
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Knot Theory - ThinkQuest 1997
A short course on knot theory, including tutorials on the basics, knot invariants, knot properties, and knot arithmetic; biographical information on historical and contemporary figures working with knot theory; applications of knot theory; a discussion
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"Kryptos" - Central Intelligence Agency (CIA)
This page showcases the history and mystery of "Kryptos," a sculpture at the CIA by artist James Sanborn. See the Flash video introduction, and learn more about the sculpture, the code, and the artist. Text-only version available.
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KSEG - Ilya Baran
KSEG is a Linux program for dynamically exploring Euclidean geometry. Create a construction, such as a triangle with a circumcenter; drag its vertices, and its circumcenter moves accordingly in real time. Features include a fast core to support large
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Kumon Math & Reading Centers
Individualized, self-paced, mastery learning programs for math and reading, offered at the center or by correspondence. The Kumon method emphasizes practical skills rather than theoretical concepts and focuses on self-learning. Students receive daily
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Kung Fu Science - Institute of Physics
Watch martial artist Chris Crudelli demonstrate to physicist Michelle Cain how she can break a wooden plank with one strike of her bare hand. Before actually attempting the feat herself, Cain applies Newton's laws and the conservation of energy to calculate
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language and literacy: Mathematics - John Bald
The author of The Literacy File and Using Phonics to Teach Reading and Writing, Bald teaches reading, writing, and foreign languages in the UK. His blog posts, which date back to August, 2008, have included "Language, understanding and confidence in maths,"
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The Largest Known Primes - Chris Caldwell
An integer greater than one is called a prime number if its only positive divisors (factors) are one and itself. Primes are the building blocks of the positive integers: every positive integer is a product of prime numbers in one and only one way, except
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Lateral Puzzles - Paul Sloane
Pose or solve lateral thinking puzzles, also known as situation puzzles, which depict a counterintuitive scenario to be explained by asking yes-no questions or by proposing explanations. Read question-and-answer conversations of current and solved puzzles;
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Latest posts from Math - Teach For Us
Math teacher blogs from the "network connecting Teach For America (TfA) corps members and alumni who share their stories about ensuring an excellent education for all children." Posts, dating back to July, 2006, have included "what do I need to do to
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The Latino Connection - Pedro Ruíz-García
A page designed to simplify the search for information on Latino/Hispanic countries. Individual country pages with links to country's history, culture, maps, travel and tourism, arts, cuisine, higher education, and other related Web pages, newsgroups,
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The Laughing Mathematician - Thomas Woolley
Humorous blog begun April, 2011, by a researcher of mathematical biology at the University of Oxford. Posts "that make me laugh or have a mathematical flavour (hopefully, both)" have included "Mathematical biology. Create you own Turing patterns," "Finding
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Launch into Math - C. Halter
A project created to further student understanding about the Internet, its resources, and the NASA Space Shuttle program. SpaceMath activities are provided for geometry (measure area and distance in space photographs); algebra (use the math that keeps
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Laws of Thought - Keith Devlin (Devlin's Angle)
"What Zeno of Citium actually did was found the Stoic school of logic. Though modern mathematical logic is popularly credited as having its beginnings in the syllogistic logic of Aristotle, most of the fundamental notions of contemporary propositional
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Learner Online - Annenberg Media
The Annenberg/CPB Project leads in helping schools and community organizations use telecommunications technologies to improve learning for all students. Since 1991 the Annenberg/CPB Math and Science Project has funded the development of print and electronic
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